2 * Allwinner sun4i MUSB Glue Layer
7 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #include <linux/clk.h>
21 #include <linux/err.h>
22 #include <linux/extcon.h>
24 #include <linux/kernel.h>
25 #include <linux/module.h>
27 #include <linux/phy/phy-sun4i-usb.h>
28 #include <linux/platform_device.h>
29 #include <linux/reset.h>
30 #include <linux/soc/sunxi/sunxi_sram.h>
31 #include <linux/usb/musb.h>
32 #include <linux/usb/of.h>
33 #include <linux/usb/usb_phy_generic.h>
34 #include <linux/workqueue.h>
35 #include "musb_core.h"
38 * Register offsets, note sunxi musb has a different layout then most
39 * musb implementations, we translate the layout in musb_readb & friends.
41 #define SUNXI_MUSB_POWER 0x0040
42 #define SUNXI_MUSB_DEVCTL 0x0041
43 #define SUNXI_MUSB_INDEX 0x0042
44 #define SUNXI_MUSB_VEND0 0x0043
45 #define SUNXI_MUSB_INTRTX 0x0044
46 #define SUNXI_MUSB_INTRRX 0x0046
47 #define SUNXI_MUSB_INTRTXE 0x0048
48 #define SUNXI_MUSB_INTRRXE 0x004a
49 #define SUNXI_MUSB_INTRUSB 0x004c
50 #define SUNXI_MUSB_INTRUSBE 0x0050
51 #define SUNXI_MUSB_FRAME 0x0054
52 #define SUNXI_MUSB_TXFIFOSZ 0x0090
53 #define SUNXI_MUSB_TXFIFOADD 0x0092
54 #define SUNXI_MUSB_RXFIFOSZ 0x0094
55 #define SUNXI_MUSB_RXFIFOADD 0x0096
56 #define SUNXI_MUSB_FADDR 0x0098
57 #define SUNXI_MUSB_TXFUNCADDR 0x0098
58 #define SUNXI_MUSB_TXHUBADDR 0x009a
59 #define SUNXI_MUSB_TXHUBPORT 0x009b
60 #define SUNXI_MUSB_RXFUNCADDR 0x009c
61 #define SUNXI_MUSB_RXHUBADDR 0x009e
62 #define SUNXI_MUSB_RXHUBPORT 0x009f
63 #define SUNXI_MUSB_CONFIGDATA 0x00c0
66 #define SUNXI_MUSB_VEND0_PIO_MODE 0
69 #define SUNXI_MUSB_FL_ENABLED 0
70 #define SUNXI_MUSB_FL_HOSTMODE 1
71 #define SUNXI_MUSB_FL_HOSTMODE_PEND 2
72 #define SUNXI_MUSB_FL_VBUS_ON 3
73 #define SUNXI_MUSB_FL_PHY_ON 4
74 #define SUNXI_MUSB_FL_HAS_SRAM 5
75 #define SUNXI_MUSB_FL_HAS_RESET 6
76 #define SUNXI_MUSB_FL_NO_CONFIGDATA 7
77 #define SUNXI_MUSB_FL_PHY_MODE_PEND 8
79 /* Our read/write methods need access and do not get passed in a musb ref :| */
80 static struct musb *sunxi_musb;
85 struct platform_device *musb_pdev;
87 struct reset_control *rst;
89 struct platform_device *usb_phy;
90 struct usb_phy *xceiv;
91 enum phy_mode phy_mode;
93 struct work_struct work;
94 struct extcon_dev *extcon;
95 struct notifier_block host_nb;
98 /* phy_power_on / off may sleep, so we use a workqueue */
99 static void sunxi_musb_work(struct work_struct *work)
101 struct sunxi_glue *glue = container_of(work, struct sunxi_glue, work);
102 bool vbus_on, phy_on;
104 if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
107 if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) {
108 struct musb *musb = glue->musb;
112 spin_lock_irqsave(&musb->lock, flags);
114 devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL);
115 if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) {
116 set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
117 musb->xceiv->otg->default_a = 1;
118 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
120 devctl |= MUSB_DEVCTL_SESSION;
122 clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
123 musb->xceiv->otg->default_a = 0;
124 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
126 devctl &= ~MUSB_DEVCTL_SESSION;
128 writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL);
130 spin_unlock_irqrestore(&musb->lock, flags);
133 vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
134 phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
136 if (phy_on != vbus_on) {
138 phy_power_on(glue->phy);
139 set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
141 phy_power_off(glue->phy);
142 clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
146 if (test_and_clear_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags))
147 phy_set_mode(glue->phy, glue->phy_mode);
150 static void sunxi_musb_set_vbus(struct musb *musb, int is_on)
152 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
155 set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
156 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
158 clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
161 schedule_work(&glue->work);
164 static void sunxi_musb_pre_root_reset_end(struct musb *musb)
166 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
168 sun4i_usb_phy_set_squelch_detect(glue->phy, false);
171 static void sunxi_musb_post_root_reset_end(struct musb *musb)
173 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
175 sun4i_usb_phy_set_squelch_detect(glue->phy, true);
178 static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
180 struct musb *musb = __hci;
183 spin_lock_irqsave(&musb->lock, flags);
185 musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);
187 writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);
190 * sunxi musb often signals babble on low / full speed device
191 * disconnect, without ever raising MUSB_INTR_DISCONNECT, since
192 * normally babble never happens treat it as disconnect.
194 if ((musb->int_usb & MUSB_INTR_BABBLE) && is_host_active(musb)) {
195 musb->int_usb &= ~MUSB_INTR_BABBLE;
196 musb->int_usb |= MUSB_INTR_DISCONNECT;
199 if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {
200 /* ep0 FADDR must be 0 when (re)entering peripheral mode */
201 musb_ep_select(musb->mregs, 0);
202 musb_writeb(musb->mregs, MUSB_FADDR, 0);
205 musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
207 writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);
209 musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX);
211 writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX);
213 musb_interrupt(musb);
215 spin_unlock_irqrestore(&musb->lock, flags);
220 static int sunxi_musb_host_notifier(struct notifier_block *nb,
221 unsigned long event, void *ptr)
223 struct sunxi_glue *glue = container_of(nb, struct sunxi_glue, host_nb);
226 set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
228 clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
230 set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags);
231 schedule_work(&glue->work);
236 static int sunxi_musb_init(struct musb *musb)
238 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
242 musb->phy = glue->phy;
243 musb->xceiv = glue->xceiv;
245 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) {
246 ret = sunxi_sram_claim(musb->controller->parent);
251 ret = clk_prepare_enable(glue->clk);
253 goto error_sram_release;
255 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
256 ret = reset_control_deassert(glue->rst);
258 goto error_clk_disable;
261 writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);
263 /* Register notifier before calling phy_init() */
264 ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST,
267 goto error_reset_assert;
269 ret = phy_init(glue->phy);
271 goto error_unregister_notifier;
273 musb->isr = sunxi_musb_interrupt;
275 /* Stop the musb-core from doing runtime pm (not supported on sunxi) */
276 pm_runtime_get(musb->controller);
280 error_unregister_notifier:
281 extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
284 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
285 reset_control_assert(glue->rst);
287 clk_disable_unprepare(glue->clk);
289 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
290 sunxi_sram_release(musb->controller->parent);
294 static int sunxi_musb_exit(struct musb *musb)
296 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
298 pm_runtime_put(musb->controller);
300 cancel_work_sync(&glue->work);
301 if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))
302 phy_power_off(glue->phy);
306 extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
309 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
310 reset_control_assert(glue->rst);
312 clk_disable_unprepare(glue->clk);
313 if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
314 sunxi_sram_release(musb->controller->parent);
319 static void sunxi_musb_enable(struct musb *musb)
321 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
325 /* musb_core does not call us in a balanced manner */
326 if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
329 schedule_work(&glue->work);
332 static void sunxi_musb_disable(struct musb *musb)
334 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
336 clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);
339 static struct dma_controller *
340 sunxi_musb_dma_controller_create(struct musb *musb, void __iomem *base)
345 static void sunxi_musb_dma_controller_destroy(struct dma_controller *c)
349 static int sunxi_musb_set_mode(struct musb *musb, u8 mode)
351 struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
352 enum phy_mode new_mode;
356 new_mode = PHY_MODE_USB_HOST;
358 case MUSB_PERIPHERAL:
359 new_mode = PHY_MODE_USB_DEVICE;
362 new_mode = PHY_MODE_USB_OTG;
365 dev_err(musb->controller->parent,
366 "Error requested mode not supported by this kernel\n");
370 if (glue->phy_mode == new_mode)
373 if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) {
374 dev_err(musb->controller->parent,
375 "Error changing modes is only supported in dual role mode\n");
379 if (musb->port1_status & USB_PORT_STAT_ENABLE)
380 musb_root_disconnect(musb);
383 * phy_set_mode may sleep, and we're called with a spinlock held,
384 * so let sunxi_musb_work deal with it.
386 glue->phy_mode = new_mode;
387 set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags);
388 schedule_work(&glue->work);
394 * sunxi musb register layout
395 * 0x00 - 0x17 fifo regs, 1 long per fifo
396 * 0x40 - 0x57 generic control regs (power - frame)
397 * 0x80 - 0x8f ep control regs (addressed through hw_ep->regs, indexed)
398 * 0x90 - 0x97 fifo control regs (indexed)
399 * 0x98 - 0x9f multipoint / busctl regs (indexed)
400 * 0xc0 configdata reg
403 static u32 sunxi_musb_fifo_offset(u8 epnum)
408 static u32 sunxi_musb_ep_offset(u8 epnum, u16 offset)
410 WARN_ONCE(offset != 0,
411 "sunxi_musb_ep_offset called with non 0 offset\n");
413 return 0x80; /* indexed, so ignore epnum */
416 static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset)
418 return SUNXI_MUSB_TXFUNCADDR + offset;
421 static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset)
423 struct sunxi_glue *glue;
425 if (addr == sunxi_musb->mregs) {
426 /* generic control or fifo control reg access */
429 return readb(addr + SUNXI_MUSB_FADDR);
431 return readb(addr + SUNXI_MUSB_POWER);
433 return readb(addr + SUNXI_MUSB_INTRUSB);
435 return readb(addr + SUNXI_MUSB_INTRUSBE);
437 return readb(addr + SUNXI_MUSB_INDEX);
439 return 0; /* No testmode on sunxi */
441 return readb(addr + SUNXI_MUSB_DEVCTL);
443 return readb(addr + SUNXI_MUSB_TXFIFOSZ);
445 return readb(addr + SUNXI_MUSB_RXFIFOSZ);
446 case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */
447 glue = dev_get_drvdata(sunxi_musb->controller->parent);
448 /* A33 saves a reg, and we get to hardcode this */
449 if (test_bit(SUNXI_MUSB_FL_NO_CONFIGDATA,
453 return readb(addr + SUNXI_MUSB_CONFIGDATA);
454 /* Offset for these is fixed by sunxi_musb_busctl_offset() */
455 case SUNXI_MUSB_TXFUNCADDR:
456 case SUNXI_MUSB_TXHUBADDR:
457 case SUNXI_MUSB_TXHUBPORT:
458 case SUNXI_MUSB_RXFUNCADDR:
459 case SUNXI_MUSB_RXHUBADDR:
460 case SUNXI_MUSB_RXHUBPORT:
461 /* multipoint / busctl reg access */
462 return readb(addr + offset);
464 dev_err(sunxi_musb->controller->parent,
465 "Error unknown readb offset %u\n", offset);
468 } else if (addr == (sunxi_musb->mregs + 0x80)) {
469 /* ep control reg access */
470 /* sunxi has a 2 byte hole before the txtype register */
471 if (offset >= MUSB_TXTYPE)
473 return readb(addr + offset);
476 dev_err(sunxi_musb->controller->parent,
477 "Error unknown readb at 0x%x bytes offset\n",
478 (int)(addr - sunxi_musb->mregs));
482 static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data)
484 if (addr == sunxi_musb->mregs) {
485 /* generic control or fifo control reg access */
488 return writeb(data, addr + SUNXI_MUSB_FADDR);
490 return writeb(data, addr + SUNXI_MUSB_POWER);
492 return writeb(data, addr + SUNXI_MUSB_INTRUSB);
494 return writeb(data, addr + SUNXI_MUSB_INTRUSBE);
496 return writeb(data, addr + SUNXI_MUSB_INDEX);
499 dev_warn(sunxi_musb->controller->parent,
500 "sunxi-musb does not have testmode\n");
503 return writeb(data, addr + SUNXI_MUSB_DEVCTL);
505 return writeb(data, addr + SUNXI_MUSB_TXFIFOSZ);
507 return writeb(data, addr + SUNXI_MUSB_RXFIFOSZ);
508 /* Offset for these is fixed by sunxi_musb_busctl_offset() */
509 case SUNXI_MUSB_TXFUNCADDR:
510 case SUNXI_MUSB_TXHUBADDR:
511 case SUNXI_MUSB_TXHUBPORT:
512 case SUNXI_MUSB_RXFUNCADDR:
513 case SUNXI_MUSB_RXHUBADDR:
514 case SUNXI_MUSB_RXHUBPORT:
515 /* multipoint / busctl reg access */
516 return writeb(data, addr + offset);
518 dev_err(sunxi_musb->controller->parent,
519 "Error unknown writeb offset %u\n", offset);
522 } else if (addr == (sunxi_musb->mregs + 0x80)) {
523 /* ep control reg access */
524 if (offset >= MUSB_TXTYPE)
526 return writeb(data, addr + offset);
529 dev_err(sunxi_musb->controller->parent,
530 "Error unknown writeb at 0x%x bytes offset\n",
531 (int)(addr - sunxi_musb->mregs));
534 static u16 sunxi_musb_readw(const void __iomem *addr, unsigned offset)
536 if (addr == sunxi_musb->mregs) {
537 /* generic control or fifo control reg access */
540 return readw(addr + SUNXI_MUSB_INTRTX);
542 return readw(addr + SUNXI_MUSB_INTRRX);
544 return readw(addr + SUNXI_MUSB_INTRTXE);
546 return readw(addr + SUNXI_MUSB_INTRRXE);
548 return readw(addr + SUNXI_MUSB_FRAME);
550 return readw(addr + SUNXI_MUSB_TXFIFOADD);
552 return readw(addr + SUNXI_MUSB_RXFIFOADD);
554 return 0; /* sunxi musb version is not known */
556 dev_err(sunxi_musb->controller->parent,
557 "Error unknown readw offset %u\n", offset);
560 } else if (addr == (sunxi_musb->mregs + 0x80)) {
561 /* ep control reg access */
562 return readw(addr + offset);
565 dev_err(sunxi_musb->controller->parent,
566 "Error unknown readw at 0x%x bytes offset\n",
567 (int)(addr - sunxi_musb->mregs));
571 static void sunxi_musb_writew(void __iomem *addr, unsigned offset, u16 data)
573 if (addr == sunxi_musb->mregs) {
574 /* generic control or fifo control reg access */
577 return writew(data, addr + SUNXI_MUSB_INTRTX);
579 return writew(data, addr + SUNXI_MUSB_INTRRX);
581 return writew(data, addr + SUNXI_MUSB_INTRTXE);
583 return writew(data, addr + SUNXI_MUSB_INTRRXE);
585 return writew(data, addr + SUNXI_MUSB_FRAME);
587 return writew(data, addr + SUNXI_MUSB_TXFIFOADD);
589 return writew(data, addr + SUNXI_MUSB_RXFIFOADD);
591 dev_err(sunxi_musb->controller->parent,
592 "Error unknown writew offset %u\n", offset);
595 } else if (addr == (sunxi_musb->mregs + 0x80)) {
596 /* ep control reg access */
597 return writew(data, addr + offset);
600 dev_err(sunxi_musb->controller->parent,
601 "Error unknown writew at 0x%x bytes offset\n",
602 (int)(addr - sunxi_musb->mregs));
605 static const struct musb_platform_ops sunxi_musb_ops = {
606 .quirks = MUSB_INDEXED_EP,
607 .init = sunxi_musb_init,
608 .exit = sunxi_musb_exit,
609 .enable = sunxi_musb_enable,
610 .disable = sunxi_musb_disable,
611 .fifo_offset = sunxi_musb_fifo_offset,
612 .ep_offset = sunxi_musb_ep_offset,
613 .busctl_offset = sunxi_musb_busctl_offset,
614 .readb = sunxi_musb_readb,
615 .writeb = sunxi_musb_writeb,
616 .readw = sunxi_musb_readw,
617 .writew = sunxi_musb_writew,
618 .dma_init = sunxi_musb_dma_controller_create,
619 .dma_exit = sunxi_musb_dma_controller_destroy,
620 .set_mode = sunxi_musb_set_mode,
621 .set_vbus = sunxi_musb_set_vbus,
622 .pre_root_reset_end = sunxi_musb_pre_root_reset_end,
623 .post_root_reset_end = sunxi_musb_post_root_reset_end,
626 /* Allwinner OTG supports up to 5 endpoints */
627 #define SUNXI_MUSB_MAX_EP_NUM 6
628 #define SUNXI_MUSB_RAM_BITS 11
630 static struct musb_fifo_cfg sunxi_musb_mode_cfg[] = {
631 MUSB_EP_FIFO_SINGLE(1, FIFO_TX, 512),
632 MUSB_EP_FIFO_SINGLE(1, FIFO_RX, 512),
633 MUSB_EP_FIFO_SINGLE(2, FIFO_TX, 512),
634 MUSB_EP_FIFO_SINGLE(2, FIFO_RX, 512),
635 MUSB_EP_FIFO_SINGLE(3, FIFO_TX, 512),
636 MUSB_EP_FIFO_SINGLE(3, FIFO_RX, 512),
637 MUSB_EP_FIFO_SINGLE(4, FIFO_TX, 512),
638 MUSB_EP_FIFO_SINGLE(4, FIFO_RX, 512),
639 MUSB_EP_FIFO_SINGLE(5, FIFO_TX, 512),
640 MUSB_EP_FIFO_SINGLE(5, FIFO_RX, 512),
643 static struct musb_hdrc_config sunxi_musb_hdrc_config = {
644 .fifo_cfg = sunxi_musb_mode_cfg,
645 .fifo_cfg_size = ARRAY_SIZE(sunxi_musb_mode_cfg),
649 .num_eps = SUNXI_MUSB_MAX_EP_NUM,
650 .ram_bits = SUNXI_MUSB_RAM_BITS,
654 static int sunxi_musb_probe(struct platform_device *pdev)
656 struct musb_hdrc_platform_data pdata;
657 struct platform_device_info pinfo;
658 struct sunxi_glue *glue;
659 struct device_node *np = pdev->dev.of_node;
663 dev_err(&pdev->dev, "Error no device tree node found\n");
667 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
671 memset(&pdata, 0, sizeof(pdata));
672 switch (usb_get_dr_mode(&pdev->dev)) {
673 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
674 case USB_DR_MODE_HOST:
675 pdata.mode = MUSB_PORT_MODE_HOST;
676 glue->phy_mode = PHY_MODE_USB_HOST;
679 #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_GADGET
680 case USB_DR_MODE_PERIPHERAL:
681 pdata.mode = MUSB_PORT_MODE_GADGET;
682 glue->phy_mode = PHY_MODE_USB_DEVICE;
685 #ifdef CONFIG_USB_MUSB_DUAL_ROLE
686 case USB_DR_MODE_OTG:
687 pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
688 glue->phy_mode = PHY_MODE_USB_OTG;
692 dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n");
695 pdata.platform_ops = &sunxi_musb_ops;
696 pdata.config = &sunxi_musb_hdrc_config;
698 glue->dev = &pdev->dev;
699 INIT_WORK(&glue->work, sunxi_musb_work);
700 glue->host_nb.notifier_call = sunxi_musb_host_notifier;
702 if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb"))
703 set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags);
705 if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb"))
706 set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
708 if (of_device_is_compatible(np, "allwinner,sun8i-a33-musb")) {
709 set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
710 set_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, &glue->flags);
713 glue->clk = devm_clk_get(&pdev->dev, NULL);
714 if (IS_ERR(glue->clk)) {
715 dev_err(&pdev->dev, "Error getting clock: %ld\n",
717 return PTR_ERR(glue->clk);
720 if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
721 glue->rst = devm_reset_control_get(&pdev->dev, NULL);
722 if (IS_ERR(glue->rst)) {
723 if (PTR_ERR(glue->rst) == -EPROBE_DEFER)
724 return -EPROBE_DEFER;
725 dev_err(&pdev->dev, "Error getting reset %ld\n",
727 return PTR_ERR(glue->rst);
731 glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
732 if (IS_ERR(glue->extcon)) {
733 if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
734 return -EPROBE_DEFER;
735 dev_err(&pdev->dev, "Invalid or missing extcon\n");
736 return PTR_ERR(glue->extcon);
739 glue->phy = devm_phy_get(&pdev->dev, "usb");
740 if (IS_ERR(glue->phy)) {
741 if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
742 return -EPROBE_DEFER;
743 dev_err(&pdev->dev, "Error getting phy %ld\n",
745 return PTR_ERR(glue->phy);
748 glue->usb_phy = usb_phy_generic_register();
749 if (IS_ERR(glue->usb_phy)) {
750 dev_err(&pdev->dev, "Error registering usb-phy %ld\n",
751 PTR_ERR(glue->usb_phy));
752 return PTR_ERR(glue->usb_phy);
755 glue->xceiv = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
756 if (IS_ERR(glue->xceiv)) {
757 ret = PTR_ERR(glue->xceiv);
758 dev_err(&pdev->dev, "Error getting usb-phy %d\n", ret);
759 goto err_unregister_usb_phy;
762 platform_set_drvdata(pdev, glue);
764 memset(&pinfo, 0, sizeof(pinfo));
765 pinfo.name = "musb-hdrc";
766 pinfo.id = PLATFORM_DEVID_AUTO;
767 pinfo.parent = &pdev->dev;
768 pinfo.res = pdev->resource;
769 pinfo.num_res = pdev->num_resources;
771 pinfo.size_data = sizeof(pdata);
773 glue->musb_pdev = platform_device_register_full(&pinfo);
774 if (IS_ERR(glue->musb_pdev)) {
775 ret = PTR_ERR(glue->musb_pdev);
776 dev_err(&pdev->dev, "Error registering musb dev: %d\n", ret);
777 goto err_unregister_usb_phy;
782 err_unregister_usb_phy:
783 usb_phy_generic_unregister(glue->usb_phy);
787 static int sunxi_musb_remove(struct platform_device *pdev)
789 struct sunxi_glue *glue = platform_get_drvdata(pdev);
790 struct platform_device *usb_phy = glue->usb_phy;
792 platform_device_unregister(glue->musb_pdev);
793 usb_phy_generic_unregister(usb_phy);
798 static const struct of_device_id sunxi_musb_match[] = {
799 { .compatible = "allwinner,sun4i-a10-musb", },
800 { .compatible = "allwinner,sun6i-a31-musb", },
801 { .compatible = "allwinner,sun8i-a33-musb", },
804 MODULE_DEVICE_TABLE(of, sunxi_musb_match);
806 static struct platform_driver sunxi_musb_driver = {
807 .probe = sunxi_musb_probe,
808 .remove = sunxi_musb_remove,
810 .name = "musb-sunxi",
811 .of_match_table = sunxi_musb_match,
814 module_platform_driver(sunxi_musb_driver);
816 MODULE_DESCRIPTION("Allwinner sunxi MUSB Glue Layer");
818 MODULE_LICENSE("GPL v2");